2n = 88

Laxly caespitose. Culms (4)–10–30–(40) cm. × 0.5–1 mm., glab.; basal bracts dull dark brown or chestnut-brown. Lvs (6)–8–11 per culm, < or = culms, 2–4 mm. wide, rather stiff, often curved, yellow-green, rather flat but with midrib evident on abaxial surface, scabrid on margins and adaxial surface. Spikes (2.5)–4–7–(9) cm. long, often bracteate, subclavate, 4–5 mm. diam. in the female portion of spike, male portion more slender, us. conspicuous, c. 2 mm. diam. and ⅓―¼ the length of the whole spike; female fls (10)–20–35, almost all closely crowded, internodes 1–5 mm. long. Glumes > utricles in lower part of spike, = utricles above, deciduous, ovate or subulate, acute or acuminate, membr., greenish brown or light brown, us. striated, midrib green with 3 distinct nerves, later becoming dark brown. Utricles 5–7 × 1.5–2 mm., trigonous, broadly ovoid, green to grey-brown, dull, faintly nerved except for the prominent lateral nerves, stipe 1–1.5 mm. long, beak 1–2 mm. long.